MC34845DEPR2 Freescale Semiconductor, MC34845DEPR2 Datasheet - Page 14

• Manufacturer Part Number: MC34845DEPR2
• Description: IC LED DVR BACKLIGHT 6CH 24QFN
• Manufacturer: Freescale Semiconductor

Specifications of MC34845DEPR2

• Internal Driver: Yes
• Type - Primary: Backlight
• Mounting Type: Surface Mount
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 6
• Frequency: 270kHz ~ 330kHz
• Voltage - Supply: 5 V ~ 21 V
• Voltage - Output: 60V
• Package / Case: 24-UFQFN Exposed Pad
• Operating Temperature: -40°C ~ 85°C
• Operating Supply Voltage: 5 V to 21 V
• Maximum Supply Current: 5 mA
• Maximum Power Dissipation: 3.4 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL APPLICATIONS
INTRODUCTION
14
34845
Cont rol
Un it
10k
Ω
kO
Cont rol
10kΩ
Unit
0. 1uf
VIN
2.2nF
10 V
7.65kΩ
765k
0.1 %
0. 1uf
3.3KΩ
VIN
2. 2uF
10V
Ω
765kΩ
7.65kΩ
0. 1%
7nF
2kΩ
56nF
WAKE
COM P
PWM
VD C1
VD C2
2. 2uF
10 V
VIN
56pF
EN
COMP
220pF
WAKE
PWM
VDC1
VDC2
2.2uF
10V
VI N
EN
(V
(V
6
16
18
15
1
20
23
17
Figure 11. Typical Application Circuit for Single Wire Control, f
Figure 12. Typical Application Circuit for Single Wire Control, f
IN
IN
16
18
15
6
1
20
23
= 9.0V, I
= 8.0V, I
MC34845A
13
MC34845 B/D
GND
13
GND
EP
EP
LED
LED
21
GND
21
GND
= 20 mA/channel, 10 LEDs/channel, OVP = 35V, V
= 20 mA/channel, 14 LEDs/channel, OVP = 49V, V
10uf
25V
24
22
10
11
12
14
10uf
25V
4
3
2
5
7
8
9
24
10
11
12
22
14
4
3
2
5
7
8
9
CH1
CH2
CH3
CH4
CH6
F AIL
SWA
SWB
VOU T
PGN D
PGN D
OVP
CH 5
S WA
S WB
V OUT
P GND
P GND
OVP
CH1
CH2
CH3
CH4
CH5
CH6
FAIL
33uH
10uH
60 V, 1A
80V, 1A
Caps should be located
as close as possible to the
MC34845 Device
680KΩ
Caps should be located
as close as possible to the
MC34845 Device
680kΩ
167K
2uF
114kΩ
M O
Ω
2uF 2uF
2 .2uF
2.2 uF
2uF
100 pF
100 pF
100pF
100pF
100pF
100 pF
100 pF
100 pF
100pF
100 pF
100 pF
S
S
100p F
PWM
PWM
Analog Integrated Circuit Device Data
= 1.2 MHz
= 300 kHz
LED
LEG 1
LED
LEG 1
= 3.3V)
= 3.3V)
LED
LEG 2
LED
LEG 2
LED
LEG 3
Freescale Semiconductor
LED
LEG 3
LED
LEG 4
LED
LEG 4
LED
LEG 5
LED
LEG 5
LED
LEG 6
LED
LEG 6